Basically: this is just self-help hippie nonsense to me. My irony detector is off the charts, and I was expecting to be more impressed.
Similarly, if you are trying to destroy a small target and you know it lies in a 10 km^2 area, it may be optimal to employ a carpet-bombing strategy over the whole area. This doesn't mean that any of the individual bombs are optimized: most of them will fall nowhere near the target, and they are 'irrational' in support of a broader rationalization strategy.
This has to do with the fact that you only have enough information to narrow the target to such a wide area. With more information, you can optimize the individual bombs and maybe switch strategies away from carpet bombing.
Our fear processing machinery is a carpet bombing strategy that drops specific fears in our way that we have to deal with. Overall it is better than nothing, but since we are trying to _improve_ our strategy, we are forced to conclude that it is not an ideal methodology. We have to collect more information, and we have to ensure that this new information is accounted for in the decision-making process. This means fighting your reflexes. You cannot do better than nature by idolizing it.
It's exactly because we've got this corrupted evolved hardware that we must actively seek out all irrationality in our minds.
After all, things like availability bias were also developed for good reasons. No sense being afraid of tigers and not going into the forest for good if no one you know has ever seen a tiger. That's just as good heuristic as "be scared when going to high places".
> Recent example from Anna: Jumping off the Stratosphere Hotel in Las Vegas in a wire-guided fall. I knew it was safe based on 40,000 data points of people doing it without significant injury, but to persuade my brain I had to visualize 2 times the population of my college jumping off and surviving. Also, my brain sometimes seems much more pessimistic, especially about social things, than I am, and is almost always wrong.
Fear of heights is a very primal, very understandable and even reasonably well understood response. Our brains have specific hardware for this kind of circumstance, and it exists for good (even "rational") reasons. Sweeping it into the same generic bucket with all other "irrationality" is just silly.